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' A. Klss INCUBATOR Fi1ed Jan. 1 1924 2 Sheets-Sheet 2 Inventor: .dlada r Leokcs Kiss Ji'tws Patented Oct. 6, 1925.

UNITED STATES PATENT oFFitfE.

Amara LianAcs KISS, F IBUDAIJBIIEST, HUNGARY, AssIeiIo'R' or enemy to enbaa MOLNAR, or BUDAPEST, HUNGARY.

INCUB'ATOR.

Application hled xanuar is, 1924. Serial No. 686,447.

To all whom it may anna-n:

Be it ltnowh that I, Uh-min Lumics Kiss. a citizen of the Hungarian Republic, residing at 16 Erzcbet tel, Budapest. V" Hungary, have invented certain new and useful Incubators, of which the following is a specification.

The subject of this invention is an incubator, in which the heat required for hatching the eggs is provided by hot water being supplied once a day. The new incubator has the advantage that it automatically regulates the heat in an accurate manner, Without it being necessary for the hot water to be poured in at a definite'time or in a definite qua'ntity or at a definite temperau v y p In the accompanying drawing a constructional 'exarhple of the invention is shown, Figure- 1 being a longitudinal section of the incuhator,-Figure 2 a corresponding cross section, Figure 3 a longitudinal section through the heat regulating device, Figure 4a section on line of Figure 3. V 1 111 the incubator according to the inven tion the heacihg ln' ediumisfhot water which is held in 'a container A. As the-heating medium in this container-does not have. a constant temperature, the heat given off by it is not uniform. After water has been added, the ohtainer' i's vry hot and it cools off gradually. Accordilig to the present inventio the distance of the egg tray B from the water container A is variable, so as to obtain a constant heat for the eggs. The movement of the egg tray B for varying its height is effected by automatic means com rising a thermostat J, which travels together with the egg tray and is M 40 located at or near the level of eggs placed on the-tray B, and a combined operating and braking device controlled by the th'ermostat, the arrangement being suchthat when the temperature in the egg chamber B at the levelat which the eggs are situated varies from the normal incubating temperature the thermo' tat causes the operating gear to move the egg tray either up or down, until the eggs together with the thermostat J reach a level within the egg chamber having just the proper incubating temperature, whereupon the thermostat automatically resumes its initial state in which it causes the braking device to keep the egg tray at the ig. 1)-is suspended at that passi'ng both waysfrom theshan Eg .l for lnstance, they r'un thewight and-left over the pulleys D and-B the C and C and from the latter over other pulleys D and D back'tothe middle-of the egg tray and to a; second -sha lit which they arewound? Around the shaft E is wound inf --th e op site dirictioh to the supporting 'c'ords Cg Qjribthfldfd G which is kept in tehsibil the wei h't I H serving to move 'theg g tray; B; tog e't downwards as well. as;i1'pwaifdif* WV'hei! cord G, supporting the-weight -H aha" emai mg the egg chambe'i' BfbvTi' the pulley-G causes the shaft E to rotafief'a'rid' tli'e unwin'ds' the cord G, flbn i the-se'id shaftgihc supporting cords Q, C, for the egg tray B will atthe same tinge-j wouiid on to the shaft If at'tlfe a fi amine-Brake is-applied to the shaft E ftheweight II will cause the portions E p C' D E, aha. E,D,--C-,D,--E of; the suspending cords to be-shorte'neda'nd thereby i'ais'e the egg tray B. When however the brake is applied to the'shaft E ahd the ends of the cords C and C wound on the shatt'E are allowed to run oil, the portions named above of the system ofi c'ordsrC' 'and" C; will become longer under the' combined -ac-. tion of the weight H and the weight of the egg tray B itself, as well as'the weight of the parts arranged on'oi placed upon the eg'r tray which will -con'sequently descend.

The motion of :le shafts E, and E must be slowed down to such an extent that it maybe properly braked by small forces. For this pur' cse the arsan'Wment shown in Figure. 3 and {1 for example may be used,

which is provided with a centrifu al brake.

or automatically reducing the speed or On the shaft E, or is revolution.

mounted a toothed wheel U,, which is combined with a ratchet wheel U and drives through gearing a toothed wheel U and by this means operates the centrifugal brake W, Z, V on theshaft of the .toothed wheel U. The discs W and V are'connected together by flat springs Z,, weights Z being fixed to the latter. On turning of theshaft U, the weights Z seek to swing outwards, which causes them to draw the disc V towards the disz; V. This causes the disc V to come in contact with the stop X, which brakes it by friction. In this way the motion of the shaft E, or E, is retarded to the required extent, a brake R, or R being provided on each of the shafts E, and E, (F ig. 2). The arrangement may be brought to rest completely by a weight P on a'lever F. The lever F is controlled by the thermostat J. The movements due to the expansion of the thermostat are transmitted at the bottom to a lever K (Fig. 2) and by the latter through a rod L to the point N, of a twoarmed lever i resting in a wedge-shaped recess provided in an.adjusting screw M by means of which the egg tray can be so regulated as to be brought to rest in a certain temperature zone. On the other side, the thermostat J acts also upon a second point N of the two-armed lever N directly as shown in Fig. 2. Weights O and O, are

- provided at the ends of the arms of the lever N, the weight O being greater than the weight 0,. At that end, at which one of these weights comes in contact with the small horizontal plate F below the ends of the levers F, the weight P is raised from the disc, thereby releasing the brake R, or R respectively.

' The operation of the new incubator is as follows:

Assume first that at that level of the egg chamber B, at which the eggs and the thermostat J are held there exists a temperature proper for incubating. In this case, the two-armed lever N is held by the thermostat J in the position shown in Fig. 2 in which neither of the weights 0, and O contacts with its respective plate F accordingly, both of the brakes R, and R;

are in their on positions so that the weight.

. H, the weight of the egg tray B and the Weight of the entire load on the latter tending to rotate the shafts E, and E cannot effect any movement of the said shafts. Supposing now that byany cause whatever, the temperature within the egg chamber 13,, at the level of the eggs (which are at the same level as that of the thermostat itself) rises, the thermostat will accordingly expand, thereby raising the point N of the two-armed lever N. At the same time, the point N, of the lever N will be pulled down by the thermostat J through the intermediary of the rod K so that the weight O,

the shaft R.

comes into contact with its plate F thereby raising, through the lever F,, the weight P, and, consequently releasing the brake R, which holds the shaft E stationary. The combined action of the weight H, the weight of the egg tray. B and the weight of'the eggs and all the parts attached to the egg tray B causes the shaft E, to rotate thereby unwinding the suspending cords C C from The shaft E being at the same time held by its brake R the portions E. ,D,,C,D,E, and E D,'O D. .E, of the suspending cords will become longer and the egg tray B r. ill consequently descend. As soon as the thermostat J which moves together with the egg tray B positions. Should the temperature in-the egg chamber 'at' the level of the eggs fall the thermostat J will contract thereby caus ing the point N of the two-armed leveriN to be lowered-by the weight O wwhich' is larger than the weight 0,. Accordingly, the weight 0, will contact with its platepF, thereby releasing the brake- R Conse= quently, the weight-H- will cause theshaft E to rotate,'the shaft E,howeve'r,--being held byits brake R the shaftE will-,by

its rotation wind thesuspendingmordscg; C on to the said shaft E, therebyJshorten-j ing the portion. E '.-..D. .C,+-D 1;-Q one side and the portion--..-E D -C r+.

D. ,E,:on the other side.-. Ac'cordinglmthe egg tray ,and therewith. the-{. thermostat il will rise tofa level within the egg, chamber situated nearer to the heating-means A and accordingly having a: higher'rtemperatureg As soon as the thermostat J reaches the level within the egg chamber having just the, proper temperature'for incubating it willr automatically resume its initial state shown b are held in their on positions. After a certain timev the weight H will; sink down to the ground.- In order to be; able to wind up the arrangement from time to time like a clock the ratchet wheel U,-is: fixed to the toothed wheel U, ;A hinged door 13,, shown in Fig 2 in theopen posi-; tion in which it is supported-by cords B allows access to the chamber B for enabling the eggs to be placed upon the cg tray B, said door being, swung'up'wards to closethe chamber B, when the-eggs have been placed in position.- a a In place of the centrifugal'brake, shown in Figures 3 and 4 braking means may be used, hi h mak se at six r liqei res s mor c the act on 0 a needi hm Vhat I claim is An incubator a ing in combinatio an egg chamber, a hot water container located above the egg chamber, an egg tray. in the egg chamber, a thermostat capable of being acted on by the temperature. prevailing in the egg chamber and means ca mblc of being acted on by the thermostat for automat icallycontrolling the distance of the egg tray from the water container, as set forth.

2. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an egg tray in the egg chamber, a thermostat capable of being acted on by the temperature prevailing in the egg chamber. means controllable. by the thermostat for automatically raising the egg tray towards the hot water Container, on the temperature in the egg chamber falling, means controllable by the thermostat for antomatically lowering the egg tray away from the hot water container, on the temperature in the egg chamber rising and means for keeping the egg tray stationary, while the temperature remains constant, as set forth.

'3. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an egg tray in the egg chamber, a thermostat mounted on the said egg tray capable of being acted on by the temperature prevailing in the egg chamber, means controllable by the thermostat for automatically raising the egg tray towards the hot water container, on the temperature in the egg chamber falling, means controllable by the thermostat for automatically lowering the egg tray away from the hot water container, on the temperature in the egg chamber rising. and means for keeping the egg tray stationary ,while the temperature remains constant, as set forth.

4. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an egg tray in the egg chamber, a thermostat capable of being acted on by the temperature prevailing in the egg chamber, means controllable by the thermostat for automatically raising the egg tray towards the hot water container, on the temperature in the egg chamber falling, means controllable by the thermostat for automatically lowering the egg tray away from the hot water container, on the temperature rising, and braking means capable of being acted on by the thermostat for keeping the egg tray stationary, while the temperature remains constant, as set forth.

5. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an egg tray in the egg chamber, means for automatically raising the egg tray towards the hot water cas e-le r, a brake ta eiaieteie ne n J QRQI iYQ me s 9 t maticely ewe ne t as my Way frei tbe hot water container, a brake maintaimng said lowering means inoperative and a thermostat for releasing the brake for said raising means on the temperature in the egg chamber falling and releasing the brake for said lowering means on the temperature in the egg chamber rising, as set forth.

6. An incubator having combination an egg chamber. a hot water container located above the egg chamber, an egg tray in the egg chamber, a thermostat capable of being acted on by the temperature prevailin in the egg chamber, means (Olltl'OllElblQ by the thermostat for automatically raising the egg tray, a weight for actuating said raising means, means for lowering the egg tray, said'means being intended to be actuated by the effective weight of the tray, and means for keeping the egg tray stationary. when the temperature remains constant, as set forth.

7. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an egg tray in the egg chamber, cords for suspending the egg tray, a thermostat capable of being acted on by the temperature prevailing in the egg chamber, winding means for the said cords, controllable by the thermostat for automatically raising the egg tray towards the hot water container, on the temperature in the egg chamber falling, and for automatically lowering the egg tray away from the hot water container, on the temperature rising, and means for keeping the egg tray stationary, while the temperature remains constant, as set forth.

8. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an egg tray in the egg chamber, cords for suspending the egg tray, a thermostat capable of being acted on by the temperature prevailing in the egg chamber, winding drums for the said cords mounted on the egg tray and controllable by the thermostat for automatically raising the egg tray towards the hot water container, on the temperature in the egg chamber falling, and for automatically lowering the egg tray away from the hot water container, on the temperature rising, and means for keeping the egg tray stationary, while the temperature remains constant, as set forth.

9. An incubator having in combination an egg chamber, a hot water container located above the egg chamber, an e g tray in the egg chamber. a thermostat capable of being acted on by the temperature prevailing in the egg chamber, means controllable by the thermostat for automatically raising the egg tray towards the hot water container. on the temperature in the egg chamber falling,

means for automatically lowering the egg tray away from the hot water container, on the temperature rising, and centrifugal brakes for limiting the speed of the egg tray during its upward and downward motion, as set forth.

' 10. An incubatorhaving in combination anegg'c-hamberfa hot water container 10- cated above the egg chamber, ,an egg tray in the egg-"chamber, means comprising-a raising shaft rotatablymounted on the egg trav'for automatically.raising the egg tray towards the hot water container, 21 weight for rotating said shaft, "a brake forlnaintaining the raising shaft inoiperative, means comprising a lowering 'slaft rotatab'ly mounted on theegg tray for automatically lowering the'egg tray,a'way from the hot water container, said lowering shaft being intended to be rotated bi; the effective "tion of the lowering "ber rising, asset forth.

weight of the egg tray, a brake for maintaining said lowering shaft inoperative, pulleys mounted in the egg chamber, cords for suspending the egg tray, each of said cords straddling one of said pulleys and having its one end coiled round the raising shaft so as to be wound up 'thereon'during the rotation of the raising shaft, and having its other end coiled round the lowering shaft so as to be woundupthereonduringthe rotashaft and a thermostat for releasing the brake'on the raising shaft on the, temperature in the egg chamber falling and releasing the brake on the lowering shaft on the temperature In testimony 'whereof I have signed my name to'this specification.

ALADAR LEDACS Kiss in the egg cham- 

